# file = open("README")
# text = file.read()
# print(text)
# print("-" * 50)
# text = file.read()
# print(text)
# file.close()

# file = open("README", "w")
# file.write("wwwwx")
# file.close()


# file = open("README")
# while True:
#     text = file.readline()
#     if not text:
#         break
#     print(text, end="")
# file.close()
#

# import os
#
# # os.rename("123", "README")
# print(os.listdir("."))
# # print(os.path.isdir(""))
# print(os.getcwd())